This EPDM O-Ring has a diameter of 89.7x2.5 mm and is Black in color. The hardness of this O-ring 89.7x2.5 - EPDM - Sulfer - 70 Shore A - Black - ORS159580 is 70 Shore A. Alternative names for the compound are , and it is commonly produced by Dow Chemical - ExxonMobil - and Lion Elastomers. The O-Ring is typically used in and has an operating temperature range from -40 ºC to 125 ºC. O-Rings 421817 are referred to as 159580 and have a DIN 3771 size of 89.7x2.5. This item is equivalent to and has an None approval. The chemical name of this O-Ring is Ethylene propylene diene monomer.